For the past two years, my commute has averaged between 12 and 15 miles (one way), and I haven't driven once. Like tsl, this is an extended commute from my one way direct route of 4.5 to 5 miles. However, during heavy snow falls, I have had to revert to my direct route because that is what gets plowed. We had a small snowfall last week, and the MUPs are still slick in spots so I have been adding different loops on cleared streets so I can keep up a minimum 25 miles per day ride. What would your contingency plans be if there is too much snow to ride (or wind/rain/hail/etc)? The 30 mile round trip would not keep me from choosing the house if I had some other way to get to work in the worst case scenario.